Parting ways with XT ice-tech rotors for lighter HS1 not worth it in this case?

One bike has XT ice-tech rotors, about 114g each, 160mm. They have been durable, don't pulsate and simply work.

Other bike has HS1. About 95g (160mm) each and for my xc race needs they are good.

I've had crappy rotors that pulsated and wore quickly although they were light. Having said that, from a WW perspective, would you buy another set of HS1 (about $11 per set delivered from Hong Kong, reputable seller) and sell the ice-techs (barely used, buddy would give about $60 pair) or would you just toss the HS1 on the raceday bike and use the heavier XT for the other bike?

using 86g Formula 160mm 1-piece steel rotors currently instead of 39g to 48g 160mm alloy Innolites that are now reserved for competition. have no grumbles with the Formula rotors - they haven't warped, cool-down rapidly & no chatter or squeal

weenie rotors mostly work okay when the surfaces are new & pristine, but even then - the lower performance often forces me to brake early & longer, rather than hard & late…

nabbed a pair of new 160mm steel Formula's on the big auction site the other day, Taiwanese seller, approx $21.30 each inc free postage… they might be a good compromise between the XT & HS1?

the mrs has some 160mm & 180mm Formula red ano alloy spider + steel rotors arriving from Italy tomorrow, will put them on the scales likely be a tad lighter than XT

I had hs1 rotors that came stock on my superfly. Nothing but problems with squealing. Tried everything. New pads a couple of times. Proper bed in, bled bled bled, tape trick. Nothing worked. Got some touch but lighter ashima airotors and so far no problems. Quiet with great modulation. So to some it up hs1 were horrible for me. I've heard avid rotors are some of the worst out there.

Avid's can't be that bad! …have you tried using copper grease between the pads & the caliper pistons?

79g 160mm Hope Race-Edition X2 floating rotor

purchased a pair of these Hope Race-Edition floating rotors a while ago, great stopping etc - but don't work well with Formula or Magura calipers + the open design munches brake pads compared to Formula's design